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Effects of IV level (A, D), absolute value of mean trait divergence (B, E) and soil fertility (C, F) on the stabilising effect of IV (A–C), overyielding (D–F) predicted over the whole set of virtual communities. Stars indicate significant differences in means between treatments. ns: not significant. Overyielding (OY) and stabilising effect are calculated according to Equations 3, 6.
